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| 型號(hào)： | AD9280-EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Complete 8-Bit, 32 MSPS, 95 mW CMOS A/D Converter |
| 中文描述： | 完整的8位，32 MSPS的95毫瓦的CMOS A / D轉(zhuǎn)換 |
| 文件頁數(shù)： | 17/24頁 |
| 文件大?。?/td> | 366K |
| 代理商： | AD9280-EB |
AD9280
–17–
REV. D
Figures 35–38 combine the dual-tone SFDR as well as single
tone SFDR and SNR performance at IF frequencies of 45 MHz,
70 MHz, 85 MHz and 135 MHz. Note, the SFDR vs. ampli-
tude data is referenced to dBFS while the single tone SNR data
INPUT POWER LEVEL – dBFS
70
0
–0.5
–40
–5
W
S
–10
–15
–20
–25
–30
–35
60
40
30
20
10
50
SNR
DUAL TONE SFDR
SINGLE TONE SFDR
CLK = 25.7MHz
SINGLE TONE = 45.5MHz
DUAL TONE F1 = 44.5MHz
F2 = 45.5MHz
Figure 35. SNR/SFDR for IF @ 45 MHz
INPUT POWER LEVEL – dBFS
70
0
–0.5
–40
–5
W
S
–10
–15
–20
–25
–30
–35
60
40
30
20
10
50
SNR
DUAL TONE SFDR
SINGLE TONE SFDR
CLK = 31.1MHz
SINGLE TONE = 70.5MHz
DUAL TONE F1 = 69.5MHz
F2 = 70.5MHz
Figure 36. SNR/SFDR for IF @ 70 MHz
is referenced to dBc. The AD9280 was operated in the differen-
tial mode (via transformer) with a 1 V span. The analog sup-
ply (AVDD) and the digital supply (DRVDD) were set to +5 V
and 3.3 V, respectively.
INPUT POWER LEVEL – dBFS
80
0
–0.5
–40
–5
W
S
–10
–15
–20
–25
–30
–35
70
40
30
20
10
60
50
SNR
DUAL TONE SFDR
SINGLE TONE SFDR
CLK = 30.9MHz
SINGLE TONE = 85.5MHz
DUAL TONE F1 = 84.5MHz
F2 = 85.5MHz
Figure 37. SNR/SFDR for IF @ 85 MHz
INPUT POWER LEVEL – dBFS
70
0
–0.5
–40
–5
W
S
–10
–15
–20
–25
–30
–35
60
40
30
20
10
50
SNR
SINGLE TONE SFDR
FS = 32MHz
SINGLE TONE = 135.5MHz
F1 = 134.5MHz
F2 = 135.5MHz
DUAL TONE SFDR
Figure 38. SNR/SFDR for IF @ 135 MHz
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